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- Author or Editor: F. Sosa x
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Abstract
The use of18F radionuclide in the preparation of 2-[18F]-FDG is reported.
Abstract
The sorption behavior of cobalt and cadmium by zeolite Y has been investigated. Cobalt and cadmium solutions were exchanged with the zeolite at different pH's. Cobalt, cadmium and sodium in the samples were determined by neutron activation analysis. The sorption of cadmium was higher than that of cobalt, however, the selectivity for both cations by the zeolite was low.
Abstract
This study test whether sublingual administration of nitroglycerin (NTG) could improve the capability of99mTc-MIBI to detect reversibility in exercise-induced perfusion defects and to compare it with the201TI stress-redistribution-reinjection protocol. Twenty-one patients with previous myocardial infarction were submitted to exercise, rest and NTG rest99mTc-MIBI imaging (3-day protocol). The patients also underwent exercise, redistribution and reinjection201Tl myocardial scintigraphy. A total of 273 myocardial segments were analyzed: 76 (28%) had irreversible defects on stress-rest99mTc-MIBI, 60 (79%) appeared as fixed defects and 16 (21%) were reversible on NTG rest99mTc-MIBI. Of the 78 myocardial segments with irreversible defects on standard stress-redistribution thallium cardiac imaging, 63 (81%) did not change and 15 (19%) demonstrated enhanced uptake of thallium after reinjection. Data show that rest NTG99mTc-MIBI study improves the detection of reversible myocardium versus standard exercise/rest99mTc-MIBI and achieve similar results than201Tl reinjection protocol.
